Dear Sarah C.,

 Please consult

https://sites.math.rutgers.edu/~zeilberg/Hist21/mt1S.pdf

for the full solutions.

You got  81 points (out of 120).

Here is what you got wrong:

#4(ii): -2 points (did not give full details)

#6: - 7 points (most dates are wrong)

#10: -10 points (see answer key)
#11: -10 points (see answer key)
#12: -10 points (see answer key)






 Best wishes,

   Dr. Z.